Year	% of GDP
1960	15.120811958176786
1961	13.838985903272983
1962	13.06728538328357
1963	12.530343453316739
1964	12.973840384902632
1965	14.094493460538892
1966	14.622542590241508
1967	15.122386175018612
1968	17.845176953863817
1969	16.26110982773977
1970	17.529411764705884
1971	17.870959690502932
1972	17.75032509752926
1973	21.54953858635027
1974	17.765856737141053
1975	21.08559498956159
1976	20.060667340748232
1977	19.594269425832007
1978	19.975917749853345
1979	21.61440960640427
1980	23.151940706065925
1981	20.76105629627377
1982	21.955864394952606
1983	22.04090543177198
1984	22.668631042446442
1985	23.881045358966656
1986	21.45437443086868
1987	17.966205211726386
1988	13.18430289120491
1989	16.00492120330123
1990	14.348856623237232
1991	15.271982642410547
1992	14.419718537254797
1993	13.592343294945074
1994	13.439807469260087
1995	13.434738823941503
1996	11.770308471941371
1997	11.399883847102013
1998	11.198895810455896
1999	10.604059128889062
2000	12.40782071647526
2001	12.497125280285172
2002	12.275717423875008
2003	13.41248953836615
2004	15.621628064292825
2005	13.71652865899559
2006	11.291505348690109
2007	12.286981935216975
2008	11.228442113346896
2009	11.973436003022965
2010	13.323998409605586
2011	12.784623330627905
2012	14.563835069732567
2013	19.11439644505398
2014	19.623936416038827
2015	16.723530367222928
2016	16.728894244231928
2017	16.491208399860135
2018	15.963263338311728
2019	15.369934229497414
2020	11.535185287074064
2021	10.92459923263486